big vs astronomical

big and astronomical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
big	No	Yes	No	Yes
astronomical	No	Yes	No	No

big (adjective)	astronomical (adjective)
above average in size or number or quantity or magnitude or extent	relating or belonging to the science of astronomy
conspicuous in position or importance	inconceivably large
given or giving freely
generous and understanding and tolerant
marked by intense physical force
significant
prodigious
serious or severe
loud and firm
(of animals) fully developed
in an advanced stage of pregnancy
feeling self-importance
exhibiting self-importance